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30 September, 16:18

A neutral atom contains 12 neutrons and 11 electrons. The number of protons in this atom is

(1) 1 (3) 12

(2) 11 (4) 23

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Answers (1)
  1. 30 September, 16:38
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    Because the atom is neutral, it has no charge. For this to happen, the number of positive and negative charges must be the same. Therefore, because there are 11 - 1 charged electrons, there must also be 11 + 1 charged protons

    So the answer is (2)
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